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Message-ID: <20230810163627.6206-16-vbabka@suse.cz>
Date: Thu, 10 Aug 2023 18:36:35 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: "Liam R. Howlett" <Liam.Howlett@...cle.com>,
Matthew Wilcox <willy@...radead.org>,
Suren Baghdasaryan <surenb@...gle.com>,
Christoph Lameter <cl@...ux.com>,
David Rientjes <rientjes@...gle.com>,
Pekka Enberg <penberg@...nel.org>,
Joonsoo Kim <iamjoonsoo.kim@....com>
Cc: Hyeonggon Yoo <42.hyeyoo@...il.com>,
Roman Gushchin <roman.gushchin@...ux.dev>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
Vlastimil Babka <vbabka@...e.cz>
Subject: [RFC v2 7/7] tools: Add SLUB percpu array functions for testing
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
Support new percpu array functions to the test code so they can be used
in the maple tree testing.
Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
Signed-off-by: Vlastimil Babka <vbabka@...e.cz>
---
tools/include/linux/slab.h | 4 ++++
tools/testing/radix-tree/linux.c | 14 ++++++++++++++
tools/testing/radix-tree/linux/kernel.h | 1 +
3 files changed, 19 insertions(+)
diff --git a/tools/include/linux/slab.h b/tools/include/linux/slab.h
index 311759ea25e9..1043f9c5ef4e 100644
--- a/tools/include/linux/slab.h
+++ b/tools/include/linux/slab.h
@@ -7,6 +7,7 @@
#define SLAB_PANIC 2
#define SLAB_RECLAIM_ACCOUNT 0x00020000UL /* Objects are reclaimable */
+#define SLAB_NO_MERGE 0x01000000UL /* Prevent merging with compatible kmem caches */
#define kzalloc_node(size, flags, node) kmalloc(size, flags)
@@ -45,4 +46,7 @@ void kmem_cache_free_bulk(struct kmem_cache *cachep, size_t size, void **list);
int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t size,
void **list);
+int kmem_cache_setup_percpu_array(struct kmem_cache *s, unsigned int count);
+int kmem_cache_prefill_percpu_array(struct kmem_cache *s, unsigned int count,
+ gfp_t gfp);
#endif /* _TOOLS_SLAB_H */
diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/radix-tree/linux.c
index d587a558997f..cbe7937fdd5e 100644
--- a/tools/testing/radix-tree/linux.c
+++ b/tools/testing/radix-tree/linux.c
@@ -187,6 +187,20 @@ int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t size,
return size;
}
+int kmem_cache_setup_percpu_array(struct kmem_cache *s, unsigned int count)
+{
+ return 0;
+}
+
+int kmem_cache_prefill_percpu_array(struct kmem_cache *s, unsigned int count,
+ gfp_t gfp)
+{
+ if (count > s->non_kernel)
+ return s->non_kernel;
+
+ return count;
+}
+
struct kmem_cache *
kmem_cache_create(const char *name, unsigned int size, unsigned int align,
unsigned int flags, void (*ctor)(void *))
diff --git a/tools/testing/radix-tree/linux/kernel.h b/tools/testing/radix-tree/linux/kernel.h
index c5c9d05f29da..fc75018974de 100644
--- a/tools/testing/radix-tree/linux/kernel.h
+++ b/tools/testing/radix-tree/linux/kernel.h
@@ -15,6 +15,7 @@
#define printk printf
#define pr_err printk
+#define pr_warn printk
#define pr_info printk
#define pr_debug printk
#define pr_cont printk
--
2.41.0
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